May Day
May Day itself is really a day of multiple celebrations. While its a celebration of Springtime, traditionally celebrated with a Maypole, throughout most of the world May 01st is known as International Workers Day.

Similar to the US Labor Day, May Day has become an international celebration of the social and economic achievements of the working class and labor movement and is marked by massive street rallies led by workers, their trade unions, anarchists and various socialist and communist parties.*